Keep or return K3?

Hello all, and thank you for your replies in advance. I have a K3 waiting under the tree for Christmas. Up until now I have been shooting with a K7 and prior to that a K10. I shoot mostly my daughter's athletic events (cheering and field hockey). I also shoot a lot on vacation i.e. walking around without a tripod (although I do have one). I have been reading a lot about how difficult it (may) be to get clear photos with the new 24MP sensor without perfect technique or a tripod. From those who have some experience with the K3, does it lend itself to that kind of photography or may I be better served with a K5II(s). I shoot mostly raw but have to admit, have been shooting about 50% JPEG on travels as get tired of the PP (usually come home with 2000-3000 pictures from vacation). I process the photos with Aperture. Thanks again for the advice. Have great holidays!!!